The journal retracts the May 15, 2018 article cited above.
Following publication, concerns were raised regarding misrepresentation of data and duplication of previously published data. The authors failed to provide a satisfactory explanation during the investigation, which was conducted in accordance with Frontiers' guidelines.
This retraction was approved by the Chief Editors of Frontiers in Microbiology and the Editor-in-Chief of Frontiers. The authors consider the retraction to be unwarranted and do not agree to the statement.